Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
June 13, 2023
Submitted
July 12, 2023
Operation
Air carrier
Aircraft
N8542Z
Make and model
Boeing 7378H4
Aircraft serial
63581
Aircraft time
19,473 hours, 9,653 cycles
Part
Floorbeam
Part number
UNKNOWN
Condition
Corroded
Location
Zn 200 Fus Top
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

STA 947 FLOOR BEAM WITH CORROSION AROUND LAVATORY HARD POINT ATTACH FITTING RBL 50.00.<[01] LOCATED AND DRILLED NEW INTERCOSTAL FS 947 RBL 50' IN REF B737 SRM 51-40-05-0G-0;[02] REMOVED AND REPLACED INTERCOSTAL AT STA 947 RBL 50 REF SRM 51-40-02 ; DW # 147A5650;[03] VERIFIED STEPS 1 AND 2 TASK C/W

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